Adding scripts for upload a base64 encoded OTA binary to a device

Author: aentinger

extras/tools/README.md

@@ -23,4 +23,22 @@ This tool can be used to extend (actually prefix) a binary generated with e.g. t
 0000010   7485 0000 7485 0000 0000 0000 0000 0000
 0000020   0000 0000 0000 0000 0000 0000 0000 0000
 0000030   0000 0000 7485 0000 0000 0000 0000 0000
-...
+```
+
+`bin2base64.py`
+===============
+This tool converts the binary file into base64 encoding which is necessary for feeding it to the server.
+
+### How-To-Use
+```bash
+./bin2base64.py sketch-ota.bin sketch-ota.base64
+```
+
+`ota-upload.sh`
+==============
+This tool allows to upload a OTA binary to a device via a Arduino cloud server.
+
+### How-To-Use
+```bash
+./ota-upload.sh CLIENT_ID CLIENT_SECRET DEVICE_ID sketch-ota.base64
+```

extras/tools/bin2base64.py

@@ -0,0 +1,24 @@
+#!/usr/bin/python3
+
+import sys
+import base64
+
+if len(sys.argv) != 3:
+    print ("Usage: bin2base64.py sketch-ota.bin sketch-ota.base64")
+    sys.exit()
+
+ifile = sys.argv[1]
+ofile = sys.argv[2]
+
+# Read the binary file
+in_file = open(ifile, "rb")
+bin_data = bytearray(in_file.read())
+in_file.close()
+
+# Perform the base64 conversion
+base64_data = base64.b64encode(bin_data)
+
+# Write to outfile
+out_file = open(ofile, "wb")
+out_file.write(base64_data)
+out_file.close()

extras/tools/ota-upload.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+if [ "$#" -ne 4 ]; then
+  echo "Usage: ota-upload.sh CLIENT_ID CLIENT_SECRET DEVICE_ID sketch-ota.base64"
+  exit 1
+fi
+
+printf "Obtaining JSON Web Token (JWT) ... "
+curl --silent --location --request POST 'http://api-dev.arduino.cc/iot/v1/clients/token' \
+  --header 'content-type: application/x-www-form-urlencoded' \
+  --header 'Content-Type: application/x-www-form-urlencoded' \
+  --data-urlencode 'grant_type=client_credentials' \
+  --data-urlencode 'client_id='"$1" \
+  --data-urlencode 'client_secret='"$2" \
+  --data-urlencode 'audience=https://api2.arduino.cc/iot' \
+  | jq -r '.access_token' \
+  > access_token
+if [ -s "access_token" ]; then
+  echo "OK"
+else
+  echo "ERROR"
+fi
+
+printf "Uploading to device ... "
+access_token_val=$(<access_token)
+base64_binary=$(<"$4")
+curl --silent --location --request PUT 'https://api-dev.arduino.cc/iot/v2/devices/'"$3"'/ota' \
+  --header 'Content-Type: application/json' \
+  --header 'Authorization: Bearer '"$access_token_val" \
+  --header 'Content-Type: text/plain' \
+  --data-raw '{"binary":"base64encodedbinary"}'
+echo "OK"
+
+printf "Cleaning up ... "
+rm access_token
+echo "OK"